]> git.proxmox.com Git - rustc.git/blob - config.toml.example
Update upstream source from tag 'upstream/1.62.1+dfsg1'
[rustc.git] / config.toml.example
1 # Sample TOML configuration file for building Rust.
2 #
3 # To configure rustbuild, copy this file to the directory from which you will be
4 # running the build, and name it config.toml.
5 #
6 # All options are commented out by default in this file, and they're commented
7 # out with their default values. The build system by default looks for
8 # `config.toml` in the current directory of a build for build configuration, but
9 # a custom configuration file can also be specified with `--config` to the build
10 # system.
11
12 # Keeps track of the last version of `x.py` used.
13 # If it does not match the version that is currently running,
14 # `x.py` will prompt you to update it and read the changelog.
15 # See `src/bootstrap/CHANGELOG.md` for more information.
16 changelog-seen = 2
17
18 # =============================================================================
19 # Global Settings
20 # =============================================================================
21
22 # Use different pre-set defaults than the global defaults.
23 #
24 # See `src/bootstrap/defaults` for more information.
25 # Note that this has no default value (x.py uses the defaults in `config.toml.example`).
26 #profile = <none>
27
28 # =============================================================================
29 # Tweaking how LLVM is compiled
30 # =============================================================================
31 [llvm]
32
33 # Whether to use Rust CI built LLVM instead of locally building it.
34 #
35 # Unless you're developing for a target where Rust CI doesn't build a compiler
36 # toolchain or changing LLVM locally, you probably want to set this to true.
37 #
38 # This is false by default so that distributions don't unexpectedly download
39 # LLVM from the internet.
40 #
41 # All tier 1 targets are currently supported; set this to `"if-available"` if
42 # you are not sure whether you're on a tier 1 target.
43 #
44 # We also currently only support this when building LLVM for the build triple.
45 #
46 # Note that many of the LLVM options are not currently supported for
47 # downloading. Currently only the "assertions" option can be toggled.
48 #download-ci-llvm = false
49
50 # Indicates whether LLVM rebuild should be skipped when running bootstrap. If
51 # this is `false` then the compiler's LLVM will be rebuilt whenever the built
52 # version doesn't have the correct hash. If it is `true` then LLVM will never
53 # be rebuilt. The default value is `false`.
54 #skip-rebuild = false
55
56 # Indicates whether the LLVM build is a Release or Debug build
57 #optimize = true
58
59 # Indicates whether LLVM should be built with ThinLTO. Note that this will
60 # only succeed if you use clang, lld, llvm-ar, and llvm-ranlib in your C/C++
61 # toolchain (see the `cc`, `cxx`, `linker`, `ar`, and `ranlib` options below).
62 # More info at: https://clang.llvm.org/docs/ThinLTO.html#clang-bootstrap
63 #thin-lto = false
64
65 # Indicates whether an LLVM Release build should include debug info
66 #release-debuginfo = false
67
68 # Indicates whether the LLVM assertions are enabled or not
69 #assertions = false
70
71 # Indicates whether the LLVM testsuite is enabled in the build or not. Does
72 # not execute the tests as part of the build as part of x.py build et al,
73 # just makes it possible to do `ninja check-llvm` in the staged LLVM build
74 # directory when doing LLVM development as part of Rust development.
75 #tests = false
76
77 # Indicates whether the LLVM plugin is enabled or not
78 #plugins = false
79
80 # Indicates whether ccache is used when building LLVM
81 #ccache = false
82 # or alternatively ...
83 #ccache = "/path/to/ccache"
84
85 # If an external LLVM root is specified, we automatically check the version by
86 # default to make sure it's within the range that we're expecting, but setting
87 # this flag will indicate that this version check should not be done.
88 #version-check = true
89
90 # Link libstdc++ statically into the rustc_llvm instead of relying on a
91 # dynamic version to be available.
92 #static-libstdcpp = true
93
94 # Whether to use Ninja to build LLVM. This runs much faster than make.
95 #ninja = true
96
97 # LLVM targets to build support for.
98 # Note: this is NOT related to Rust compilation targets. However, as Rust is
99 # dependent on LLVM for code generation, turning targets off here WILL lead to
100 # the resulting rustc being unable to compile for the disabled architectures.
101 # Also worth pointing out is that, in case support for new targets are added to
102 # LLVM, enabling them here doesn't mean Rust is automatically gaining said
103 # support. You'll need to write a target specification at least, and most
104 # likely, teach rustc about the C ABI of the target. Get in touch with the
105 # Rust team and file an issue if you need assistance in porting!
106 #targets = "AArch64;ARM;BPF;Hexagon;MSP430;Mips;NVPTX;PowerPC;RISCV;Sparc;SystemZ;WebAssembly;X86"
107
108 # LLVM experimental targets to build support for. These targets are specified in
109 # the same format as above, but since these targets are experimental, they are
110 # not built by default and the experimental Rust compilation targets that depend
111 # on them will not work unless the user opts in to building them.
112 #experimental-targets = "AVR;M68k"
113
114 # Cap the number of parallel linker invocations when compiling LLVM.
115 # This can be useful when building LLVM with debug info, which significantly
116 # increases the size of binaries and consequently the memory required by
117 # each linker process.
118 # If absent or 0, linker invocations are treated like any other job and
119 # controlled by rustbuild's -j parameter.
120 #link-jobs = 0
121
122 # When invoking `llvm-config` this configures whether the `--shared` argument is
123 # passed to prefer linking to shared libraries.
124 # NOTE: `thin-lto = true` requires this to be `true` and will give an error otherwise.
125 #link-shared = false
126
127 # When building llvm, this configures what is being appended to the version.
128 # The default is "-rust-$version-$channel", except for dev channel where rustc
129 # version number is omitted. To use LLVM version as is, provide an empty string.
130 #version-suffix = "-rust-dev"
131
132 # On MSVC you can compile LLVM with clang-cl, but the test suite doesn't pass
133 # with clang-cl, so this is special in that it only compiles LLVM with clang-cl.
134 # Note that this takes a /path/to/clang-cl, not a boolean.
135 #clang-cl = cc
136
137 # Pass extra compiler and linker flags to the LLVM CMake build.
138 #cflags = ""
139 #cxxflags = ""
140 #ldflags = ""
141
142 # Use libc++ when building LLVM instead of libstdc++. This is the default on
143 # platforms already use libc++ as the default C++ library, but this option
144 # allows you to use libc++ even on platforms when it's not. You need to ensure
145 # that your host compiler ships with libc++.
146 #use-libcxx = false
147
148 # The value specified here will be passed as `-DLLVM_USE_LINKER` to CMake.
149 #use-linker = <none> (path)
150
151 # Whether or not to specify `-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=YES`
152 #allow-old-toolchain = false
153
154 # Whether to include the Polly optimizer.
155 #polly = false
156
157 # Whether to build the clang compiler.
158 #clang = false
159
160 # Custom CMake defines to set when building LLVM.
161 #build-config = {}
162
163 # =============================================================================
164 # General build configuration options
165 # =============================================================================
166 [build]
167 # The default stage to use for the `check` subcommand
168 #check-stage = 0
169
170 # The default stage to use for the `doc` subcommand
171 #doc-stage = 0
172
173 # The default stage to use for the `build` subcommand
174 #build-stage = 1
175
176 # The default stage to use for the `test` subcommand
177 #test-stage = 1
178
179 # The default stage to use for the `dist` subcommand
180 #dist-stage = 2
181
182 # The default stage to use for the `install` subcommand
183 #install-stage = 2
184
185 # The default stage to use for the `bench` subcommand
186 #bench-stage = 2
187
188 # Build triple for the original snapshot compiler. This must be a compiler that
189 # nightlies are already produced for. The current platform must be able to run
190 # binaries of this build triple and the nightly will be used to bootstrap the
191 # first compiler.
192 #
193 # Defaults to platform where `x.py` is run.
194 #build = "x86_64-unknown-linux-gnu" (as an example)
195
196 # Which triples to produce a compiler toolchain for. Each of these triples will
197 # be bootstrapped from the build triple themselves.
198 #
199 # Defaults to just the build triple.
200 #host = ["x86_64-unknown-linux-gnu"] (as an example)
201
202 # Which triples to build libraries (core/alloc/std/test/proc_macro) for. Each of
203 # these triples will be bootstrapped from the build triple themselves.
204 #
205 # Defaults to `host`. If you set this explicitly, you likely want to add all
206 # host triples to this list as well in order for those host toolchains to be
207 # able to compile programs for their native target.
208 #target = ["x86_64-unknown-linux-gnu"] (as an example)
209
210 # Use this directory to store build artifacts.
211 # You can use "$ROOT" to indicate the root of the git repository.
212 #build-dir = "build"
213
214 # Instead of downloading the src/stage0.json version of Cargo specified, use
215 # this Cargo binary instead to build all Rust code
216 #cargo = "/path/to/cargo"
217
218 # Instead of downloading the src/stage0.json version of the compiler
219 # specified, use this rustc binary instead as the stage0 snapshot compiler.
220 #rustc = "/path/to/rustc"
221
222 # Instead of download the src/stage0.json version of rustfmt specified,
223 # use this rustfmt binary instead as the stage0 snapshot rustfmt.
224 #rustfmt = "/path/to/rustfmt"
225
226 # Flag to specify whether any documentation is built. If false, rustdoc and
227 # friends will still be compiled but they will not be used to generate any
228 # documentation.
229 #docs = true
230
231 # Flag to specify whether CSS, JavaScript, and HTML are minified when
232 # docs are generated. JSON is always minified, because it's enormous,
233 # and generated in already-minified form from the beginning.
234 #docs-minification = true
235
236 # Indicate whether the compiler should be documented in addition to the standard
237 # library and facade crates.
238 #compiler-docs = false
239
240 # Indicate whether git submodules are managed and updated automatically.
241 #submodules = true
242
243 # Update git submodules only when the checked out commit in the submodules differs
244 # from what is committed in the main rustc repo.
245 #fast-submodules = true
246
247 # The path to (or name of) the GDB executable to use. This is only used for
248 # executing the debuginfo test suite.
249 #gdb = "gdb"
250
251 # The node.js executable to use. Note that this is only used for the emscripten
252 # target when running tests, otherwise this can be omitted.
253 #nodejs = "node"
254
255 # Python interpreter to use for various tasks throughout the build, notably
256 # rustdoc tests, the lldb python interpreter, and some dist bits and pieces.
257 #
258 # Defaults to the Python interpreter used to execute x.py
259 #python = "python"
260
261 # Force Cargo to check that Cargo.lock describes the precise dependency
262 # set that all the Cargo.toml files create, instead of updating it.
263 #locked-deps = false
264
265 # Indicate whether the vendored sources are used for Rust dependencies or not
266 #vendor = false
267
268 # Typically the build system will build the Rust compiler twice. The second
269 # compiler, however, will simply use its own libraries to link against. If you
270 # would rather to perform a full bootstrap, compiling the compiler three times,
271 # then you can set this option to true. You shouldn't ever need to set this
272 # option to true.
273 #full-bootstrap = false
274
275 # Enable a build of the extended Rust tool set which is not only the compiler
276 # but also tools such as Cargo. This will also produce "combined installers"
277 # which are used to install Rust and Cargo together. This is disabled by
278 # default. The `tools` option (immediately below) specifies which tools should
279 # be built if `extended = true`.
280 #extended = false
281
282 # Installs chosen set of extended tools if `extended = true`. By default builds
283 # all extended tools except `rust-demangler`, unless the target is also being
284 # built with `profiler = true`. If chosen tool failed to build the installation
285 # fails. If `extended = false`, this option is ignored.
286 #tools = ["cargo", "rls", "clippy", "rustfmt", "analysis", "src"] # + "rust-demangler" if `profiler`
287
288 # Verbosity level: 0 == not verbose, 1 == verbose, 2 == very verbose
289 #verbose = 0
290
291 # Build the sanitizer runtimes
292 #sanitizers = false
293
294 # Build the profiler runtime (required when compiling with options that depend
295 # on this runtime, such as `-C profile-generate` or `-C instrument-coverage`).
296 #profiler = false
297
298 # Indicates whether the native libraries linked into Cargo will be statically
299 # linked or not.
300 #cargo-native-static = false
301
302 # Run the build with low priority, by setting the process group's "nice" value
303 # to +10 on Unix platforms, and by using a "low priority" job object on Windows.
304 #low-priority = false
305
306 # Arguments passed to the `./configure` script, used during distcheck. You
307 # probably won't fill this in but rather it's filled in by the `./configure`
308 # script.
309 #configure-args = []
310
311 # Indicates that a local rebuild is occurring instead of a full bootstrap,
312 # essentially skipping stage0 as the local compiler is recompiling itself again.
313 #local-rebuild = false
314
315 # Print out how long each rustbuild step took (mostly intended for CI and
316 # tracking over time)
317 #print-step-timings = false
318
319 # Print out resource usage data for each rustbuild step, as defined by the Unix
320 # struct rusage. (Note that this setting is completely unstable: the data it
321 # captures, what platforms it supports, the format of its associated output, and
322 # this setting's very existence, are all subject to change.)
323 #print-step-rusage = false
324
325 # Always patch binaries for usage with Nix toolchains. If `true` then binaries
326 # will be patched unconditionally. If `false` or unset, binaries will be patched
327 # only if the current distribution is NixOS. This option is useful when using
328 # a Nix toolchain on non-NixOS distributions.
329 #patch-binaries-for-nix = false
330
331 # =============================================================================
332 # General install configuration options
333 # =============================================================================
334 [install]
335
336 # Instead of installing to /usr/local, install to this path instead.
337 #prefix = "/usr/local"
338
339 # Where to install system configuration files
340 # If this is a relative path, it will get installed in `prefix` above
341 #sysconfdir = "/etc"
342
343 # Where to install documentation in `prefix` above
344 #docdir = "share/doc/rust"
345
346 # Where to install binaries in `prefix` above
347 #bindir = "bin"
348
349 # Where to install libraries in `prefix` above
350 #libdir = "lib"
351
352 # Where to install man pages in `prefix` above
353 #mandir = "share/man"
354
355 # Where to install data in `prefix` above
356 #datadir = "share"
357
358 # =============================================================================
359 # Options for compiling Rust code itself
360 # =============================================================================
361 [rust]
362
363 # Whether or not to optimize the compiler and standard library.
364 # WARNING: Building with optimize = false is NOT SUPPORTED. Due to bootstrapping,
365 # building without optimizations takes much longer than optimizing. Further, some platforms
366 # fail to build without this optimization (c.f. #65352).
367 #optimize = true
368
369 # Indicates that the build should be configured for debugging Rust. A
370 # `debug`-enabled compiler and standard library will be somewhat
371 # slower (due to e.g. checking of debug assertions) but should remain
372 # usable.
373 #
374 # Note: If this value is set to `true`, it will affect a number of
375 # configuration options below as well, if they have been left
376 # unconfigured in this file.
377 #
378 # Note: changes to the `debug` setting do *not* affect `optimize`
379 # above. In theory, a "maximally debuggable" environment would
380 # set `optimize` to `false` above to assist the introspection
381 # facilities of debuggers like lldb and gdb. To recreate such an
382 # environment, explicitly set `optimize` to `false` and `debug`
383 # to `true`. In practice, everyone leaves `optimize` set to
384 # `true`, because an unoptimized rustc with debugging
385 # enabled becomes *unusably slow* (e.g. rust-lang/rust#24840
386 # reported a 25x slowdown) and bootstrapping the supposed
387 # "maximally debuggable" environment (notably libstd) takes
388 # hours to build.
389 #
390 #debug = false
391
392 # Whether to download the stage 1 and 2 compilers from CI.
393 # This is mostly useful for tools; if you have changes to `compiler/` they will be ignored.
394 #
395 # You can set this to "if-unchanged" to only download if `compiler/` has not been modified.
396 #download-rustc = false
397
398 # Number of codegen units to use for each compiler invocation. A value of 0
399 # means "the number of cores on this machine", and 1+ is passed through to the
400 # compiler.
401 #
402 # Uses the rustc defaults: https://doc.rust-lang.org/rustc/codegen-options/index.html#codegen-units
403 #codegen-units = if incremental { 256 } else { 16 }
404
405 # Sets the number of codegen units to build the standard library with,
406 # regardless of what the codegen-unit setting for the rest of the compiler is.
407 # NOTE: building with anything other than 1 is known to occasionally have bugs.
408 # See https://github.com/rust-lang/rust/issues/83600.
409 #codegen-units-std = codegen-units
410
411 # Whether or not debug assertions are enabled for the compiler and standard
412 # library. Debug assertions control the maximum log level used by rustc. When
413 # enabled calls to `trace!` and `debug!` macros are preserved in the compiled
414 # binary, otherwise they are omitted.
415 #
416 # Defaults to rust.debug value
417 #debug-assertions = rust.debug (boolean)
418
419 # Whether or not debug assertions are enabled for the standard library.
420 # Overrides the `debug-assertions` option, if defined.
421 #
422 # Defaults to rust.debug-assertions value
423 #debug-assertions-std = rust.debug-assertions (boolean)
424
425 # Whether or not to leave debug! and trace! calls in the rust binary.
426 # Overrides the `debug-assertions` option, if defined.
427 #
428 # Defaults to rust.debug-assertions value
429 #
430 # If you see a message from `tracing` saying
431 # `max_level_info` is enabled and means logging won't be shown,
432 # set this value to `true`.
433 #debug-logging = rust.debug-assertions (boolean)
434
435 # Whether or not overflow checks are enabled for the compiler and standard
436 # library.
437 #
438 # Defaults to rust.debug value
439 #overflow-checks = rust.debug (boolean)
440
441 # Whether or not overflow checks are enabled for the standard library.
442 # Overrides the `overflow-checks` option, if defined.
443 #
444 # Defaults to rust.overflow-checks value
445 #overflow-checks-std = rust.overflow-checks (boolean)
446
447 # Debuginfo level for most of Rust code, corresponds to the `-C debuginfo=N` option of `rustc`.
448 # `0` - no debug info
449 # `1` - line tables only - sufficient to generate backtraces that include line
450 # information and inlined functions, set breakpoints at source code
451 # locations, and step through execution in a debugger.
452 # `2` - full debug info with variable and type information
453 # Can be overridden for specific subsets of Rust code (rustc, std or tools).
454 # Debuginfo for tests run with compiletest is not controlled by this option
455 # and needs to be enabled separately with `debuginfo-level-tests`.
456 #
457 # Note that debuginfo-level = 2 generates several gigabytes of debuginfo
458 # and will slow down the linking process significantly.
459 #
460 # Defaults to 1 if debug is true
461 #debuginfo-level = 0
462
463 # Debuginfo level for the compiler.
464 #debuginfo-level-rustc = debuginfo-level
465
466 # Debuginfo level for the standard library.
467 #debuginfo-level-std = debuginfo-level
468
469 # Debuginfo level for the tools.
470 #debuginfo-level-tools = debuginfo-level
471
472 # Debuginfo level for the test suites run with compiletest.
473 # FIXME(#61117): Some tests fail when this option is enabled.
474 #debuginfo-level-tests = 0
475
476 # Should rustc be build with split debuginfo? Default is platform dependent.
477 # Valid values are the same as those accepted by `-C split-debuginfo`
478 # (`off`/`unpacked`/`packed`).
479 #
480 # On Linux, split debuginfo is disabled by default.
481 #
482 # On Apple platforms, unpacked split debuginfo is used by default. Unpacked
483 # debuginfo does not run `dsymutil`, which packages debuginfo from disparate
484 # object files into a single `.dSYM` file. `dsymutil` adds time to builds for
485 # no clear benefit, and also makes it more difficult for debuggers to find
486 # debug info. The compiler currently defaults to running `dsymutil` to preserve
487 # its historical default, but when compiling the compiler itself, we skip it by
488 # default since we know it's safe to do so in that case.
489 #
490 # On Windows platforms, packed debuginfo is the only supported option,
491 # producing a `.pdb` file.
492 #split-debuginfo = if linux { off } else if windows { packed } else if apple { unpacked }
493
494 # Whether or not `panic!`s generate backtraces (RUST_BACKTRACE)
495 #backtrace = true
496
497 # Whether to always use incremental compilation when building rustc
498 #incremental = false
499
500 # Build a multi-threaded rustc
501 # FIXME(#75760): Some UI tests fail when this option is enabled.
502 #parallel-compiler = false
503
504 # The default linker that will be hard-coded into the generated
505 # compiler for targets that don't specify a default linker explicitly
506 # in their target specifications. Note that this is not the linker
507 # used to link said compiler. It can also be set per-target (via the
508 # `[target.<triple>]` block), which may be useful in a cross-compilation
509 # setting.
510 #
511 # See https://doc.rust-lang.org/rustc/codegen-options/index.html#linker for more information.
512 #default-linker = <none> (path)
513
514 # The "channel" for the Rust build to produce. The stable/beta channels only
515 # allow using stable features, whereas the nightly and dev channels allow using
516 # nightly features
517 #channel = "dev"
518
519 # A descriptive string to be appended to `rustc --version` output, which is
520 # also used in places like debuginfo `DW_AT_producer`. This may be useful for
521 # supplementary build information, like distro-specific package versions.
522 #description = <none> (string)
523
524 # The root location of the musl installation directory. The library directory
525 # will also need to contain libunwind.a for an unwinding implementation. Note
526 # that this option only makes sense for musl targets that produce statically
527 # linked binaries.
528 #
529 # Defaults to /usr on musl hosts. Has no default otherwise.
530 #musl-root = <platform specific> (path)
531
532 # By default the `rustc` executable is built with `-Wl,-rpath` flags on Unix
533 # platforms to ensure that the compiler is usable by default from the build
534 # directory (as it links to a number of dynamic libraries). This may not be
535 # desired in distributions, for example.
536 #rpath = true
537
538 # Prints each test name as it is executed, to help debug issues in the test harness itself.
539 #verbose-tests = false
540
541 # Flag indicating whether tests are compiled with optimizations (the -O flag).
542 #optimize-tests = true
543
544 # Flag indicating whether codegen tests will be run or not. If you get an error
545 # saying that the FileCheck executable is missing, you may want to disable this.
546 # Also see the target's llvm-filecheck option.
547 #codegen-tests = true
548
549 # Flag indicating whether git info will be retrieved from .git automatically.
550 # Having the git information can cause a lot of rebuilds during development.
551 # Note: If this attribute is not explicitly set (e.g. if left commented out) it
552 # will default to true if channel = "dev", but will default to false otherwise.
553 #ignore-git = if channel == "dev" { true } else { false }
554
555 # When creating source tarballs whether or not to create a source tarball.
556 #dist-src = true
557
558 # After building or testing extended tools (e.g. clippy and rustfmt), append the
559 # result (broken, compiling, testing) into this JSON file.
560 #save-toolstates = <none> (path)
561
562 # This is an array of the codegen backends that will be compiled for the rustc
563 # that's being compiled. The default is to only build the LLVM codegen backend,
564 # and currently the only standard options supported are `"llvm"`, `"cranelift"`
565 # and `"gcc"`. The first backend in this list will be used as default by rustc
566 # when no explicit backend is specified.
567 #codegen-backends = ["llvm"]
568
569 # Indicates whether LLD will be compiled and made available in the sysroot for
570 # rustc to execute.
571 #lld = false
572
573 # Indicates whether LLD will be used to link Rust crates during bootstrap on
574 # supported platforms. The LLD from the bootstrap distribution will be used
575 # and not the LLD compiled during the bootstrap.
576 #
577 # LLD will not be used if we're cross linking.
578 #
579 # Explicitly setting the linker for a target will override this option when targeting MSVC.
580 #use-lld = false
581
582 # Indicates whether some LLVM tools, like llvm-objdump, will be made available in the
583 # sysroot.
584 #llvm-tools = false
585
586 # Whether to deny warnings in crates
587 #deny-warnings = true
588
589 # Print backtrace on internal compiler errors during bootstrap
590 #backtrace-on-ice = false
591
592 # Whether to verify generated LLVM IR
593 #verify-llvm-ir = false
594
595 # Compile the compiler with a non-default ThinLTO import limit. This import
596 # limit controls the maximum size of functions imported by ThinLTO. Decreasing
597 # will make code compile faster at the expense of lower runtime performance.
598 #thin-lto-import-instr-limit = if incremental { 10 } else { LLVM default (currently 100) }
599
600 # Map debuginfo paths to `/rust/$sha/...`, generally only set for releases
601 #remap-debuginfo = false
602
603 # Link the compiler against `jemalloc`, where on Linux and OSX it should
604 # override the default allocator for rustc and LLVM.
605 #jemalloc = false
606
607 # Run tests in various test suites with the "nll compare mode" in addition to
608 # running the tests in normal mode. Largely only used on CI and during local
609 # development of NLL
610 #test-compare-mode = false
611
612 # Use LLVM libunwind as the implementation for Rust's unwinder.
613 # Accepted values are 'in-tree' (formerly true), 'system' or 'no' (formerly false).
614 # This option only applies for Linux and Fuchsia targets.
615 # On Linux target, if crt-static is not enabled, 'no' means dynamic link to
616 # `libgcc_s.so`, 'in-tree' means static link to the in-tree build of llvm libunwind
617 # and 'system' means dynamic link to `libunwind.so`. If crt-static is enabled,
618 # the behavior is depend on the libc. On musl target, 'no' and 'in-tree' both
619 # means static link to the in-tree build of llvm libunwind, and 'system' means
620 # static link to `libunwind.a` provided by system. Due to the limitation of glibc,
621 # it must link to `libgcc_eh.a` to get a working output, and this option have no effect.
622 #llvm-libunwind = 'no'
623
624 # Enable Windows Control Flow Guard checks in the standard library.
625 # This only applies from stage 1 onwards, and only for Windows targets.
626 #control-flow-guard = false
627
628 # Enable symbol-mangling-version v0. This can be helpful when profiling rustc,
629 # as generics will be preserved in symbols (rather than erased into opaque T).
630 # When no setting is given, the new scheme will be used when compiling the
631 # compiler and its tools and the legacy scheme will be used when compiling the
632 # standard library.
633 # If an explicit setting is given, it will be used for all parts of the codebase.
634 #new-symbol-mangling = true|false (see comment)
635
636 # =============================================================================
637 # Options for specific targets
638 #
639 # Each of the following options is scoped to the specific target triple in
640 # question and is used for determining how to compile each target.
641 # =============================================================================
642 [target.x86_64-unknown-linux-gnu]
643
644 # C compiler to be used to compile C code. Note that the
645 # default value is platform specific, and if not specified it may also depend on
646 # what platform is crossing to what platform.
647 # See `src/bootstrap/cc_detect.rs` for details.
648 #cc = "cc" (path)
649
650 # C++ compiler to be used to compile C++ code (e.g. LLVM and our LLVM shims).
651 # This is only used for host targets.
652 # See `src/bootstrap/cc_detect.rs` for details.
653 #cxx = "c++" (path)
654
655 # Archiver to be used to assemble static libraries compiled from C/C++ code.
656 # Note: an absolute path should be used, otherwise LLVM build will break.
657 #ar = "ar" (path)
658
659 # Ranlib to be used to assemble static libraries compiled from C/C++ code.
660 # Note: an absolute path should be used, otherwise LLVM build will break.
661 #ranlib = "ranlib" (path)
662
663 # Linker to be used to bootstrap Rust code. Note that the
664 # default value is platform specific, and if not specified it may also depend on
665 # what platform is crossing to what platform.
666 # Setting this will override the `use-lld` option for Rust code when targeting MSVC.
667 #linker = "cc" (path)
668
669 # Path to the `llvm-config` binary of the installation of a custom LLVM to link
670 # against. Note that if this is specified we don't compile LLVM at all for this
671 # target.
672 #llvm-config = <none> (path)
673
674 # Normally the build system can find LLVM's FileCheck utility, but if
675 # not, you can specify an explicit file name for it.
676 #llvm-filecheck = "/path/to/llvm-version/bin/FileCheck"
677
678 # If this target is for Android, this option will be required to specify where
679 # the NDK for the target lives. This is used to find the C compiler to link and
680 # build native code.
681 # See `src/bootstrap/cc_detect.rs` for details.
682 #android-ndk = <none> (path)
683
684 # Build the sanitizer runtimes for this target.
685 # This option will override the same option under [build] section.
686 #sanitizers = build.sanitizers (bool)
687
688 # Build the profiler runtime for this target(required when compiling with options that depend
689 # on this runtime, such as `-C profile-generate` or `-C instrument-coverage`).
690 # This option will override the same option under [build] section.
691 #profiler = build.profiler (bool)
692
693 # Force static or dynamic linkage of the standard library for this target. If
694 # this target is a host for rustc, this will also affect the linkage of the
695 # compiler itself. This is useful for building rustc on targets that normally
696 # only use static libraries. If unset, the target's default linkage is used.
697 #crt-static = <platform-specific> (bool)
698
699 # The root location of the musl installation directory. The library directory
700 # will also need to contain libunwind.a for an unwinding implementation. Note
701 # that this option only makes sense for musl targets that produce statically
702 # linked binaries.
703 #musl-root = build.musl-root (path)
704
705 # The full path to the musl libdir.
706 #musl-libdir = musl-root/lib
707
708 # The root location of the `wasm32-wasi` sysroot. Only used for the
709 # `wasm32-wasi` target. If you are building wasm32-wasi target, make sure to
710 # create a `[target.wasm32-wasi]` section and move this field there.
711 #wasi-root = <none> (path)
712
713 # Used in testing for configuring where the QEMU images are located, you
714 # probably don't want to use this.
715 #qemu-rootfs = <none> (path)
716
717 # =============================================================================
718 # Distribution options
719 #
720 # These options are related to distribution, mostly for the Rust project itself.
721 # You probably won't need to concern yourself with any of these options
722 # =============================================================================
723 [dist]
724
725 # This is the folder of artifacts that the build system will sign. All files in
726 # this directory will be signed with the default gpg key using the system `gpg`
727 # binary. The `asc` and `sha256` files will all be output into the standard dist
728 # output folder (currently `build/dist`)
729 #
730 # This folder should be populated ahead of time before the build system is
731 # invoked.
732 #sign-folder = <none> (path)
733
734 # The remote address that all artifacts will eventually be uploaded to. The
735 # build system generates manifests which will point to these urls, and for the
736 # manifests to be correct they'll have to have the right URLs encoded.
737 #
738 # Note that this address should not contain a trailing slash as file names will
739 # be appended to it.
740 #upload-addr = <none> (URL)
741
742 # Whether to build a plain source tarball to upload
743 # We disable that on Windows not to override the one already uploaded on S3
744 # as the one built on Windows will contain backslashes in paths causing problems
745 # on linux
746 #src-tarball = true
747
748 # Whether to allow failures when building tools
749 #missing-tools = false
750
751 # List of compression formats to use when generating dist tarballs. The list of
752 # formats is provided to rust-installer, which must support all of them.
753 #
754 # This list must be non-empty.
755 #compression-formats = ["gz", "xz"]